In the article titled -VGSC: A Web-Based Vector Graph Toolkit of Genome Synteny and Collinearity- 1, in Section 2.3. Output and Result this URL http:-bio.njfu.edu.cn:8080-vgsc-web-static-downloads-vgsc-manual.pdf should be replaced by this URL http:-bio.njfu.edu.cn-vgsc-web-static-downloads-vgsc-manual.pdf and in Section 2.4. Online System, this URL http:-bio.njfu.edu.cn:8080-vgsc-web should be replaced by this URL http:-bio.njfu.edu.cn-vgsc-web.